There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized
Answer:
the formation of new and distinct species in the course of evolution.
If the reproductive isolation between two species is complete, they cannot produce viable offspring. There is not enough information to determine if they did or didn't have a recent common ancestor
Answer:
g/m2 is the unit used in a pyramid of biomass. Kilocalories is Unit of measure for energy pyramids
